CVE-2026-24032 Auth bypass in SINEC NMS
An unauthenticated remote attacker can bypass authentication in Siemens SINEC NMS to gain unauthorized access to the application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-24032?
CVE-2026-24032 is a medium-severity authentication bypass vulnerability in Siemens SINEC NMS, published on 14 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP3 with UMC). The affected application contains an authentication weakness due to insufficient validation of user identity in the UMC component. This could allow an unauthenticated remote attacker to bypass authentication and gain unauthorized access to the application. (ZDI-CAN-27564)
Weakness: CWE-347
Which versions are affected by CVE-2026-24032?
How do I fix CVE-2026-24032?
No fix has been published for CVE-2026-24032 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-24032 being exploited?
There is no known exploitation of CVE-2026-24032 in the wild and no public exploit code.
Sources
Also known as GHSA-7f3f-wq83-6q76.